Roller scraper bar for glue-spreading machines



Aug. 14, 1923. 11,464,813

H. G. FRANCIS ROLLEF SCRAPER BAR FOR GLUE SPREADING MACHINES Filed April 10 1922 2 Sheets-Sheet 1 INVENTOR H. G. FRANCIS ROLLER SCRAPER BAR FOR GLUE SPREADING MACHINES Aug.14,1923. 1,464,813

Filed April 10. 1.922 2 Sheets-Sheet 2 INVENTOR I 7 rim 4M A TTORNE Patented Aug. 14, T23.

UNHT STATES HARRY GRANT FRANCIS, OF RUSHVILLE, INDIANA.

ROLLER SCRAPER BAR FOR GLUE-SPREADING MACHINES.

Application filed April 10, 1922. Serial No. 551,124.

To all whom-it may concern.-

Be it known that I HARRY GRANT FRAN- cIs, a citizen of the U nited States of America, and resident of 820 North Harrison Street, Rushville, in the county of Bush and State of Indiana, have invented certain new and useful Improvements in Roller Scraper Bars for Glue-Spreading Machines; and I dohereby declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

My invention relates to roller scraper bars for glue spreading machines, and it has for its object the improvement in construction of such devices whereby they are simplified and rendered more efficient in action.

The novelty of my invention consists in. the combination and sub-combination of the parts as will be hereinafter set forth and specifically pointed out in the claims.

In the drawings, Fig. #1 is an end elevation of a machine embodying the improvements.

Fig. #2 is a side elevation at one end of a machine showing how the scraper rolls are driven. A is one end of a frame, B,'the lower glue roll, B is the upper glue roll, C is the lower scraper roll, and U, is the upper scraper roll. D is a worm gear that drives the lower scraper roll, D is a worm E*, which is attached to the end of the shaft B and drives the upper roll B The upper scraper roll is operated by power being transmitted from the shaft B through bevel gears F, F worm F worm gear D which is attached to the end of the upper scraper roll shaft C The lower scraper roll is operated in a similar manner by power being transmitted from the shaft B throu 'h bevel gears G, G worm G worm gear which is attached to the end of thelower scraper roll. Pivoted to the inner side of the ends of the upper trough M, are small plates'M that conform to the curve of glue roll B and scraper roll C This plate is for the purpose ofMpreventing the glue in the upper trough from leaking should be much less than trat of the out at the ends. This plate M being pivoted to the ends of the upper trough M, al-- lows it to conform to the changes that occur when the scraper roll C is adjusted in relation to the glue roll B A pan L is placed beneath the lower roll B for feeding glue to the lower roll. The upper roll B? has a pan M placed above it for providing glue for the upper roll. The glue roll B- revolves in the same surface direction as the scraper roll C, also the gluev roll B revolves in the same surface direction as the scraper roll 0 The surface speed of the scraper rolls C, C is much less than that of the glue rolls B, B The operation of my device is as follows: Power is applied to the opposite end of the lower glue roll B, to that which is shown, through gears E, E E & E the power is transmitted to the upper roll B In trying to overcome the objectionable features in the use of a continuously revolving scraper roll, it was found that by revolving the scraper-roll in the same surface direction'as its glue roll, less friction, and a closer adjustment and more even distribution of glue resulted.

The surface speed of e scraper roll lue roll. The operation of my scraper rol l is as follows. Glue is placed in the upper and lower troughs M and L. The scraper rolls are placed in the right relation to the glue rolls, power is applied to the machine, causing the glue rolls and scraper rolls to revolve. The glue rolls being in contact with the glue in the troughs owing to the direction in' which they revolve tend to carry the glue that adheres to the surface of rolls out of the troughs. The scraper roll owing to the direction it revolves tends to carr the glue back into the troughs, thus the t 'ckness of the glue deposited on the stock will be determined by the relationof the scraper roll to the'glue roll.

Having now described this invention and explained the mode of its operation, what I claim is: I

1. The combination of upper and lower rolls, troughs for applying glue to the up per and lower rolls, scraper rolls, for regulating the amount of glue which adheres to glue rolls, the scraper rolls being driven by 2. The combination of upper and lower rolls, troughs, for applying glue to the'upper and lower rolls, scraper rolls for regulating the amount of glue which adheres to glue roll, the scraper rolls being driven by bevel gears, worm and worm gears, a plate attached to the inner side of the ends of upper trough between the glue roll and scraper roll and of such aform as to conform to the contour of the scraper roll and glue roll, all substantially as described.

3. The combination of upper and lower rolls, trough for applying glue to the upper and lower rolls, scraper rolls for regulating the amount of glue which adheres to glue rolls, the scraper rolls being driven by bevel gears, Worm and worm gears, a plate pivoted to the inner side of the ends of the upper trough between the glue roll and scraper roll and of such a form as to conform to the contour of the scraper roll and glue roll, all substantially as described.

HARRY GRANT FRANCIS. Witnesses:

GEORGE J. GRIEssER, M. W. GOTTMAN. 

